In this twist of fate, world-famous actress Han Ga In finds her long-lost twin brother Kim Dong Jun (of ZE:A) on her YouTube channel! Fans and viewers alike were shocked at how similar the two celebrities looked.

In the episode, Han called Dong Jun over in a semi-competitive spirit to share some laughs and try out a face-switching filter.

Both the celebs and the spectators were stunned by the results, together with the filter that confused everybody about who was.

Kim Dong Jun later posted on Instagram and expressed his excitement over the meeting. "I finally found my sister, who is over me."

He shared photos of the meeting with the caption, "Family Reunion #familyreunion."

When Han was compared with Dong Jun, the fellow members of ZE:A couldn't believe their eyes and left comments saying that they looked a like.

Kevin said: "It was like for real." Siwan on the other hand commented: "Dong Jun, your earrings, they were funny." Minwoo added, "Wow.. is real." Park Hyungsik then jokingly asked Dong Jun: "Which side are you in- left or right?"

Online users also commented on the striking similarity.

Users, unsurprisingly, took to the comments section on online community forum theqoo, saying, "Every time I see them, I am surprised," and "There is not even blood real sibling appearance alike."

Some said the two could be mistaken for siblings or the same lost relative.

Here are other comments from Korean netizens:

Fans of both stars are in a frenzy over the revelation, calling them the "No. 1 hot lookalike duo."

Not only was the episode a showcase for their similarities but for their entertaining personalities, as well.